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Replace libLLVM symlink with linker script #121967

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Mar 6, 2024
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Replace libLLVM symlink with linker script #121967

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12 changes: 10 additions & 2 deletions src/bootstrap/src/core/build_steps/dist.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2035,10 +2035,18 @@ fn install_llvm_file(
// If we have a symlink like libLLVM-18.so -> libLLVM.so.18.1, install the target of the
// symlink, which is what will actually get loaded at runtime.
builder.install(&t!(fs::canonicalize(source)), destination, 0o644);

let full_dest = destination.join(source.file_name().unwrap());
if install_symlink {
// If requested, also install the symlink. This is used by download-ci-llvm.
let full_dest = destination.join(source.file_name().unwrap());
// For download-ci-llvm, also install the symlink, to match what LLVM does. Using a
// symlink is fine here, as this is not a rustup component.
builder.copy(&source, &full_dest);
} else {
// Otherwise, replace the symlink with an equivalent linker script. This is used when
// projects like miri link against librustc_driver.so. We don't use a symlink, as
// these are not allowed inside rustup components.
let link = t!(fs::read_link(source));
t!(std::fs::write(full_dest, format!("INPUT({})\n", link.display())));
}
} else {
builder.install(&source, destination, 0o644);
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